Question
Zinc oxide is an amphoteric oxide. Which types of substances will react with zinc oxide?
A. acids and bases
B. acids only
C. bases only
D. neither acids nor bases
Answer/Explanation
Ans:
A
Question
Reactions of three metals and their oxides are shown.
What is the order of reactivity of these metals, from most reactive to least reactive?
A 1 → 2 → 3 B 1 → 3 → 2 C 2 → 1 → 3 D 2 → 3 → 1
Answer/Explanation
Ans:
C
Question
The oxides of two elements, X and Y, are separately dissolved in water and the pH of each solution tested.
Which information about X and Y is correct?
Answer/Explanation
Ans:
B
Question
Which word equation represents a reaction that occurs?
A. sodium oxide + carbon \(\rightarrow\) sodium + carbon dioxide
B. sodium oxide + iron \(\rightarrow\) sodium + iron(II) oxide
C. iron(II) oxide + copper \(\rightarrow\) iron + copper(II) oxide
D. iron(III) oxide + carbon \(\rightarrow\) iron + carbon dioxide
Answer/Explanation
Ans:
D